EP1599710B1 - Element de fixation comportant un systeme de mesure telemetrique de grandeurs physiques - Google Patents

Element de fixation comportant un systeme de mesure telemetrique de grandeurs physiques Download PDF

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Publication number
EP1599710B1
EP1599710B1 EP03750621A EP03750621A EP1599710B1 EP 1599710 B1 EP1599710 B1 EP 1599710B1 EP 03750621 A EP03750621 A EP 03750621A EP 03750621 A EP03750621 A EP 03750621A EP 1599710 B1 EP1599710 B1 EP 1599710B1
Authority
EP
European Patent Office
Prior art keywords
fastener
sensor
foil
der
roller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03750621A
Other languages
German (de)
English (en)
Other versions
EP1599710A1 (fr
Inventor
Udo Lang
Christofer Hierold
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ETH Zurich
Original Assignee
ETH Zurich
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ETH Zurich filed Critical ETH Zurich
Priority to EP03750621A priority Critical patent/EP1599710B1/fr
Publication of EP1599710A1 publication Critical patent/EP1599710A1/fr
Application granted granted Critical
Publication of EP1599710B1 publication Critical patent/EP1599710B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
    • A61B5/6879—Means for maintaining contact with the body
    • A61B5/6882—Anchoring means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/07—Endoradiosondes
    • A61B5/076—Permanent implantation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue
    • A61B5/14539—Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue for measuring pH
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/02—Details of sensors specially adapted for in-vivo measurements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/02—Details of sensors specially adapted for in-vivo measurements
    • A61B2562/0261—Strain gauges
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0002—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network
    • A61B5/0031—Implanted circuitry

Definitions

  • the present invention relates to a fastening means with telemetric measurement of physical quantities according to the preamble of patent claim 1.
  • the present invention is concerned with the measurement of a physical quantity at a junction of two objects held together by a fastener.
  • WO 2001/12092 A1 [6] discloses a trained as an implant sensor whose detected physical quantities can be evaluated by a located outside the body interrogation unit.
  • the sensor is designed as an LRC member, so that the query is relatively simple.
  • the present invention is therefore based on the object of specifying a fastening means, in particular as an implant, which also has no unacceptable impairment of the quality of life when used on a living body and is particularly easy to apply in a surgical procedure.
  • the present fastening means has the important advantage that no more cable connection to an evaluation unit is required and only one or more of the fastening means can be used directly. This is given by the encapsulation of electronics and sensors. Such an encapsulation is of great advantage for the biocompatibility as well as for the robustness of the construction.
  • strain gauges based on biodegradable, conductive polymers are used.
  • the arrangement of the strain gages 3 or other sensors can be freely combined, as well as the closure is not bound to one of the two fastening means.
  • this termination must be permeable to certain physical quantities, for example for the measurement of a pH of a fluid.
  • fasteners allow the measurement of applied to the fastener tensile or compressive forces.
  • a third fastening means is explained in which a bending stress on the fastening means can be measured by using a plurality of suitably arranged strain gauges and the resulting signals can be transmitted to an external evaluation unit.
  • FIG. 7 an arrangement of three strain gauges 3.1, 3.2 and 3.3 on a flexible polymer film 2 is shown.
  • the polymer film 2 is rolled as in the first embodiment in direction r.
  • three strain gauges 3.1, 3.2 and 3.3 each with a contact surface 4.1, 4.2 and 4.3 are shown in the rotational "distance" of 120 ° - after rolling.
  • the strain gauges 3.1, 3.2 and 3.3 are connected at the other end electrically connected to ground 15.
  • Mass 15 and the contact surfaces 4.1, 4.2 and 4.3 are preferably connected by bonding with the transmitting device 6. It is also possible to galvanically connect the mass with the cylinder sleeve, for example with a conductive adhesive. The mass 15 could also be beaten around the "edge".
  • the origin of the signals originating from the strain gauges is encoded in a data field of a data record, so that a bending moment can be calculated on a remote evaluation unit from the three measurement results.
  • the three sensors 3.1, 3.2 and 3.3 on the polymer film 2 can be contacted directly with the pin 8 so that it has three isolated from each other by 120 ° offset finger. These fingers are formed by three slots milled in the pin.
  • the measurement of bending moments can also be achieved by rolling three such polymer films 2 into each other with respect to the strain gauges offset by 120 °.
  • This design for measuring occurring bending moments can be freely combined with respect to the structural design be with the in the FIGS. 1 to 6 described fasteners.
  • the fastener 1 is not limited to the application and use in terms of surgery, but can advantageously be used wherever a continuous measurement or a wireless measurement of physical quantities at or around a junction is required and on the other hand, no additional sensors can be used.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Biophysics (AREA)
  • Animal Behavior & Ethology (AREA)
  • Pathology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Optics & Photonics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Prostheses (AREA)
  • Measuring And Recording Apparatus For Diagnosis (AREA)
  • Materials For Medical Uses (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)

Claims (9)

  1. Moyen ( 1 ) de fixation comportant au moins un capteur ( 3 ) de mesure d'une grandeur physique, dans lequel
    - le capteur ( 3 ) est relié à un dispositif ( 6 ) d'émission, pour transmettre des signaux détectés par le capteur ( 3 ) et en ce que le capteur ( 3 ) et le dispositif ( 6 ) d'émission sont disposés à l'intérieur ( 11 ) du moyen ( 1 ) de fixation ;
    - le moyen ( 1 ) de fixation est constitué d'un rouleau ( 14 ) formé d'une feuille ( 2 ) rectangulaire,
    dans lequel le capteur ( 3 ) et des surfaces ( 4 ) de contact sont mis dissymétriquement sur la feuille ( 3 ), caractérisé en ce que les spires extérieures du rouleau ( 4 ) ne sont constituées que de la feuille ( 2 ).
  2. Moyen ( 1 ) de fixation suivant la revendication 1,
    caractérisé en ce que
    un filetage est mis sur les spires extérieures du rouleau ( 14 ).
  3. Moyen ( 1 ) de fixation suivant la revendication 1 ou 2,
    caractérisé en ce que
    la feuille ( 2 ) est en titane.
  4. Moyen ( 1 ) de fixation suivant la revendication 1 ou 2,
    caractérisé en ce que
    la feuille ( 2 ) est en un matériau biodégradable.
  5. Moyen ( 1 ) de fixation suivant l'une des revendications 1 à 4,
    caractérisé en ce que
    trois capteurs ( 3.1, 3.2, 3.3 ) sont décalés en rotation de 120° et relèvent la sollicitation du moyen ( 1 ) de fixation par des couples de flexion qui se produisent.
  6. Moyen ( 1 ) de fixation suivant la revendication 5,
    caractérisé en ce que des fentes sont disposées de manière décalées en rotation de 120° entre les trois capteurs ( 3.1, 3.2, 3.3 ).
  7. Moyen ( 1 ) de fixation suivant la revendication 6, caractérisé en ce que
    les doigts formés par les fentes sont mis en contact électriquement avec respectivement un capteur ( 3.1, 3.2, 3.3 ) et en ce que les doigts sont isolés les uns des autres.
  8. Moyen ( 1 ) de fixation suivant l'une des revendications 1 à 7,
    caractérisé en ce que
    le dispositif ( 6 ) d'émission est relié à un générateur électrochimique, pour l'alimentation en énergie électrique.
  9. Moyen ( 1 ) de fixation suivant la revendication 8,
    caractérisé en ce que
    le générateur électrochimique est disposé à l'intérieur ( 11 ) du moyen ( 1 ) de fixation.
EP03750621A 2003-03-04 2003-09-25 Element de fixation comportant un systeme de mesure telemetrique de grandeurs physiques Expired - Lifetime EP1599710B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03750621A EP1599710B1 (fr) 2003-03-04 2003-09-25 Element de fixation comportant un systeme de mesure telemetrique de grandeurs physiques

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP03004696 2003-03-04
EP03004696 2003-03-04
PCT/EP2003/010650 WO2004079317A1 (fr) 2003-03-04 2003-09-25 Element de fixation comportant un systeme de mesure telemetrique de grandeurs physiques
EP03750621A EP1599710B1 (fr) 2003-03-04 2003-09-25 Element de fixation comportant un systeme de mesure telemetrique de grandeurs physiques

Publications (2)

Publication Number Publication Date
EP1599710A1 EP1599710A1 (fr) 2005-11-30
EP1599710B1 true EP1599710B1 (fr) 2010-11-17

Family

ID=32946843

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03750621A Expired - Lifetime EP1599710B1 (fr) 2003-03-04 2003-09-25 Element de fixation comportant un systeme de mesure telemetrique de grandeurs physiques

Country Status (5)

Country Link
EP (1) EP1599710B1 (fr)
AT (1) ATE488755T1 (fr)
AU (1) AU2003270260A1 (fr)
DE (1) DE50313274D1 (fr)
WO (1) WO2004079317A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5328551A (en) * 1992-10-28 1994-07-12 Eaton Corporation Method of making high output strain gage

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5888631A (ja) * 1981-11-24 1983-05-26 Yotaro Hatamura スラスト・トルク検出素子
GB2314882A (en) * 1996-06-24 1998-01-14 Cummins Engine Co Inc Controlling fuel supply to i.c. engine using cylinder pressure measurements derived from strain gauge in cylinder head bolt
WO2000056210A1 (fr) * 1999-03-24 2000-09-28 Noveon Ip Holdings Corp. Dispositif d'implant diagnostique interroge a distance dote d'un detecteur passif electrique

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5328551A (en) * 1992-10-28 1994-07-12 Eaton Corporation Method of making high output strain gage

Also Published As

Publication number Publication date
EP1599710A1 (fr) 2005-11-30
ATE488755T1 (de) 2010-12-15
DE50313274D1 (de) 2010-12-30
AU2003270260A1 (en) 2004-09-28
WO2004079317A1 (fr) 2004-09-16

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